I'm 26, i'm 5'3 and i weigh 65 kilos i want to loose weight, which one is better to use?metformin, phentermine?what pill is better?and how to use it?

Pills for wt loss: You should use no pill unless someone--a physician--is supervising its use. Drugs like Phentermine have significant side effects and can cause many serious problems, some like pulmonary hypertension which are fatal. A history of heart disease, uncontrolled high blood pressure, overactive thyroid, glaucoma, psychological disorder, or a history of drug or alcohol issues makes Phentermine a bad idea.